Disgusting and pathetic service

Absolutely pathetic and disgusting service from your pricelock department and call centre. I signed up for your promotional pricelock offer which includes an upgrade to an explorer package in October last year. The call centre centre agent said someone would arrange installation within 2 weeks. After 2 weeks it was evident that no one was coming and I called your call centre multiple times. In January this year someone could finally help me with the installation process. Despite only having my explorer installed at the end of January I was double billed from October to February this year. I have made numerous attempts to call your call centre to try to rectify this and been stone-walled. The standard response is someone from price lock with call me back. Guess what I am still waiting for their call 3 months later!